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Light guide plate and liquid crystal display device including the same

a technology of liquid crystal display and light guide plate, which is applied in the direction of optical light guide, instruments, optics, etc., can solve the problems of thinness and lightness of lcd devices, and achieve the effect of increasing the production yield of lcd devices

Active Publication Date: 2011-02-03
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a light guide plate and an LCD device including the light guide plate that overcome limitations and disadvantages of related art. The light guide plate has a plurality of light guide patterns on its rear surface, each including a protruding portion and a groove portion. The protruding portion and the groove portion are positioned at a center of the other one of the protruding portion and the groove portion. The technical effects of the invention include producing high brightness images, providing an uniform brightness, and increasing production yield in LCD device.

Problems solved by technology

Unfortunately, there is a limitation for thinner and lighter LCD device.

Method used

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  • Light guide plate and liquid crystal display device including the same
  • Light guide plate and liquid crystal display device including the same
  • Light guide plate and liquid crystal display device including the same

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Embodiment Construction

[0031]Reference will now be made in detail to exemplary embodiments of the invention, which are illustrated in the accompanying drawings.

[0032]FIG. 3 is an explode perspective view of an LCD device according to the present invention. Referring to FIG. 3, an LCD device includes a liquid crystal panel 110, a backlight unit 120, a main frame 130, a bottom frame 150 and a top frame 140.

[0033]The liquid crystal panel 110 includes first and second substrates 112 and 114 facing each other and a liquid crystal layer (not shown) therebetween. In an active matrix type, array elements, for example, a gate line (not shown), a data line (not shown), a thin film transistor (not shown) and a pixel electrode, are formed on the first substrate 112. The gate and data lines cross each other to define a pixel region, and the thin film transistor is formed at a crossing portion of the gate and data lines. The pixel electrode is disposed in the pixel region and connected to the thin film transistor. In a...

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PUM

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Abstract

A light guide plate for a backlight unit of a liquid crystal display device includes one side surface where light from a first light source is incident; the other side surface opposite to the one side surface; a front surface combining the one and the other one side surfaces; and a rear surface including a plurality of light guide patterns, each of the plurality of light guide patterns including a protruding portion and a groove portion, wherein one of the protruding portion and the groove portion is positioned at a center of the other one of the protruding portion and the groove portion.

Description

[0001]The present invention claims the benefit of Korean Patent Application No. 10-2009-0070154 filed in Korea on Jul. 30, 2009, which is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to a light guide plate and a liquid crystal display (LCD) device, and more particularly, to a light guide plate being capable of preventing a difference in light brightness and an LCD device including the light guide plate.[0004]2. Discussion of the Related Art[0005]The liquid crystal display (LCD) devices are widely used for notebook computers, monitors, TV, and so on, because of their high contrast ratio and characteristics adequate to display moving images. The LCD devices use optical anisotropy and polarization properties of liquid crystal molecules to display images.[0006]The LCD devices require a liquid crystal panel including first and second substrates and a liquid crystal layer interposed therebetween. An arrangement of t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G02F1/13357
CPCG02B6/0036G02B6/0068G02B6/0061G02F1/1335
Inventor LEE, SANG-HYUNKIM, BYOUNG-KUMOON, WON TAEKHWANG, YOUNG-IK
Owner LG DISPLAY CO LTD